114 + Interview Questions in Circuit Theory Page 3 InterviewSolution

101.	A series RLC circuit consists of a 10Ω resistor in series with L=20μH and C=100μF. The new value of L for which the resonant frequecy is one half of the original value.
Answer» A series RLC circuit consists of a $10 Ω$ resistor in series with $L = 20 μ H$ and $C = 100 μ F$ . The new value of $L$ for which the resonant frequecy is one half of the original value.

Discussion

102.	Determine the corner frequency (fc) in Hz, for the below given high pass filter.318.4
Answer» Determine the corner frequency $(f_{c})$ in Hz, for the below given high pass filter. 318.4

Discussion

103.	Two identical coils of negligible resistance when connected in series across a 200V,50Hz source draws a current of 10A. When the terminals of one of the coils are reversed, then current drawn is 8A. The coefficient of coupling between the two coils is0.11
Answer» Two identical coils of negligible resistance when connected in series across a $200 V, 50 H z$ source draws a current of $10 A$ . When the terminals of one of the coils are reversed, then current drawn is $8 A$ . The coefficient of coupling between the two coils is 0.11

Discussion

104.	Find the voltage Vxy across the 3Ω resistor
Answer» Find the voltage $V_{x y}$ across the 3 $Ω$ resistor

Discussion

105.	A periodic waveform f(t)=(2−3cos10t)2V is given.Its rms value will be
Answer» A periodic waveform $f (t) = (2 - 3 cos 10 t)^{2} V$ is given. Its rms value will be

Discussion

106.	The power delivered by the current source, in the figure, is____.3
Answer» The power delivered by the current source, in the figure, is____. 3

Discussion

107.	The ABCD parameters of the following 2-port network are
Answer» The ABCD parameters of the following 2-port network are

Discussion

108.	Two identical coupled inductors are connected in series. The measured inductances for the two possible series connections are 380μH and 240μH. Their mutual inductance in μH is35
Answer» Two identical coupled inductors are connected in series. The measured inductances for the two possible series connections are $380 μ H$ and $240 μ H$ . Their mutual inductance in $μ H$ is 35

108.

Two identical coupled inductors are connected in series. The measured inductances for the two possible series connections are 380μH and 240μH. Their mutual inductance in μH is35

Answer»

Two identical coupled inductors are connected in series. The measured inductances for the two possible series connections are $380 μ H$ and $240 μ H$ . Their mutual inductance in $μ H$ is

35

Discussion

109.	In the circuit shown below, the current through the PMMC meter is assumed to be zero. The ideal switch toggles between position 1 and position 2. For each position, it is connected for time T/2. Assume R4Cx<<T/2 and R2Cx>>T/2The capacitor Cx can be charged up to the maximum voltage
Answer» In the circuit shown below, the current through the PMMC meter is assumed to be zero. The ideal switch toggles between position $1$ and position $2$ . For each position, it is connected for time $T / 2$ . Assume $R_{4} C_{x} << T / 2$ and $R_{2} C_{x} >> T / 2$ The capacitor $C_{x}$ can be charged up to the maximum voltage

Discussion

110.	In the circuit shown, the switch S is open for a long time and is closed at t = 0. The current i(t) for t≥0+ is
Answer» In the circuit shown, the switch S is open for a long time and is closed at t = 0. The current i(t) for $t \geq 0^{+}$ is

Discussion

111.	The number of chords in the graph of the given circuit will be
Answer» The number of chords in the graph of the given circuit will be

Discussion

112.	The switch has been in position 1 for a long time and abruptly changes to position 2 at t = 0.If time t is in seconds, the capacitor voltage VC (in volts) for t > 0 is given by
Answer» The switch has been in position 1 for a long time and abruptly changes to position 2 at t = 0. If time t is in seconds, the capacitor voltage $V_{C}$ (in volts) for t > 0 is given by

Discussion

113.	In the circuit shown in the figure, the value of capacitor C (in mF) needed to have critically damped response i(t) is10
Answer» In the circuit shown in the figure, the value of capacitor C (in mF) needed to have critically damped response i(t) is 10

113.

In the circuit shown in the figure, the value of capacitor C (in mF) needed to have critically damped response i(t) is10

Answer»

In the circuit shown in the figure, the value of capacitor C (in mF) needed to have critically damped response i(t) is

10

Discussion

114.	When one port of a two port network is open circuited, V1=4V2 and I2=0.25V2 then, which of the following is correct?
Answer» When one port of a two port network is open circuited, $V_{1} = 4 V_{2}$ and $I_{2} = 0.25 V_{2}$ then, which of the following is correct?

Discussion

Explore topic-wise InterviewSolutions in .

A series RLC circuit consists of a 10Ω resistor in series with L=20μH and C=100μF. The new value of L for which the resonant frequecy is one half of the original value.

Determine the corner frequency (fc) in Hz, for the below given high pass filter.318.4

Two identical coils of negligible resistance when connected in series across a 200V,50Hz source draws a current of 10A. When the terminals of one of the coils are reversed, then current drawn is 8A. The coefficient of coupling between the two coils is0.11

Find the voltage Vxy across the 3Ω resistor

A periodic waveform f(t)=(2−3cos10t)2V is given.Its rms value will be

The power delivered by the current source, in the figure, is____.3

The ABCD parameters of the following 2-port network are

Two identical coupled inductors are connected in series. The measured inductances for the two possible series connections are 380μH and 240μH. Their mutual inductance in μH is35

In the circuit shown below, the current through the PMMC meter is assumed to be zero. The ideal switch toggles between position 1 and position 2. For each position, it is connected for time T/2. Assume R4Cx&lt;&lt;T/2 and R2Cx&gt;&gt;T/2The capacitor Cx can be charged up to the maximum voltage

In the circuit shown, the switch S is open for a long time and is closed at t = 0. The current i(t) for t≥0+ is

The number of chords in the graph of the given circuit will be

The switch has been in position 1 for a long time and abruptly changes to position 2 at t = 0.If time t is in seconds, the capacitor voltage VC (in volts) for t &gt; 0 is given by

In the circuit shown in the figure, the value of capacitor C (in mF) needed to have critically damped response i(t) is10

When one port of a two port network is open circuited, V1=4V2 and I2=0.25V2 then, which of the following is correct?

In the circuit shown below, the current through the PMMC meter is assumed to be zero. The ideal switch toggles between position 1 and position 2. For each position, it is connected for time T/2. Assume R4Cx<<T/2 and R2Cx>>T/2The capacitor Cx can be charged up to the maximum voltage

The switch has been in position 1 for a long time and abruptly changes to position 2 at t = 0.If time t is in seconds, the capacitor voltage VC (in volts) for t > 0 is given by